YSK: The ASPCA has printable cards you can keep in your wallet, so that in the event of an emergency that leaves you unable to return home, whoever is helping you will know to alert someone to check on your pets.
from /r/YouShouldKnow
YSK: ASPCA有可打印的卡片，你可以放在钱包里，这样一旦发生紧急情况，你无法回家，不管是谁帮助你，都会知道提醒别人去看看你的宠物。